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Finding the Fourth Proportional to 354.08, 488.48 and 250.72

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Solution

The fourth proportional to 354.08, 488.48 and 250.72 is: 345.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.08 : 488.48 = 250.72 : x
  2. Step 2: Convert to fraction form
    354.08/488.48 = 250.72/x
  3. Step 3: Cross multiply
    354.08x = 488.48 × 250.72
  4. Step 4: Simplify right side
    354.08x = 122,471.71
  5. Step 5: Solve for x
    x = 122,471.71/354.08
  6. Step 6: Final answer
    x = 345.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.